AC Repair & Service in Chicago

❄️ Air Conditioning Repair in Chicago

The most common AC repair calls in Chicago are: not cooling (system runs but doesn't bring the temperature down), not running at all (system won't start), refrigerant issues (often indicated by ice on the refrigerant lines or warm air that comes and goes), and a compressor that runs constantly without reaching the set temperature. Ductless mini-split systems have their own fault modes — error codes, sensor failures, and drainage issues that differ from ducted central AC systems.

Electrical faults make up a significant proportion of AC failures. Capacitor failures (the most common single AC repair) leave the compressor or fan motor unable to start. Contactor wear is another frequent issue on older systems. Thermostat problems, refrigerant leaks, and dirty evaporator or condenser coils all affect performance. A system that's running but not cooling well is often low on refrigerant or has a dirty coil — both diagnosable and fixable.

🌡️ Full-Service HVAC — Heating AND Cooling Under One Roof

Supreme Heating is primarily known for boilers and hydronic heating, but we're a full mechanical contractor and we handle both sides of the HVAC equation. Having one contractor for your heating and cooling means consistent service records, familiarity with your specific systems, and one call when something goes wrong regardless of the season. If we've been servicing your boiler for years and your AC fails in July, you're not starting from scratch with a new company.

Reliability and consistency matter in mechanical contracting. Knowing the history of your equipment — when components were last replaced, what repairs have been done, what the system's specific quirks are — lets us diagnose faster and service more accurately. We maintain records for every client and bring that context to every visit.

How much does AC repair cost in Chicago?

AC repair costs in Chicago depend on the fault. A capacitor replacement — the most common repair on central AC systems — is usually $150–$300. Fan motor replacements run $300–$600. Refrigerant recharges (adding refrigerant without fixing the underlying leak) are a short-term solution and typically $200–$400, though the right long-term fix is finding and repairing the leak. Compressor failures are expensive — often comparable to the cost of a new system on older equipment. Our service fee is $99.99, covering the diagnostic visit and applied toward the repair.

AC systems typically last 12–18 years in the Chicago climate. For systems past 12–15 years, especially those using the older R-22 refrigerant (now out of production), the economics of repair versus replacement shift. R-22 refrigerant is expensive due to limited supply, and a refrigerant leak on an older R-22 system is often the trigger for a replacement decision. For newer systems or minor repairs, repair is almost always the right call.

AC Repair Across Southwest Chicago

We provide AC repair and service throughout Chicago and the southwest suburbs, including Oak Lawn, Cicero, Berwyn, Evergreen Park, Burbank, Palos Hills, Palos Heights, Crestwood, Tinley Park, and Orland Park. Same-day service is often available — call us when your AC isn't working.